Bundle branch blocks are abnormalities of the heart’s conduction system that show up an electrocardiogram (ECG), which is a tracing of the electrical activity in the heart.

The ECG criteria for a left bundle branch block include: ... The ECG strip below shows normal sinus rhythm, then atrial fibrillation with a rapid ventricular response develops.

This has a left bundle branch block pattern and is a good example of the AV dissociation that occurs. Now, look at the rhythm strip at the bottom in lead V1 to see the AV dissociation. This ECG ...

A specialist tells how to interpret subtle changes on the ECG, ... the 12-lead ECG. The rhythm strip is limited because ... ventricles of a BBB is reflected on the ECG because it is delayed on ...

Right Bundle Branch Block This is the most common type. If your cardiologist (a heart doctor) spots RBBB through a test called an electrocardiogram ( EKG ), they may look for underlying heart or ...

DEAR DR. ROACH: I am a 63-year-old male who, during a routine EKG, showed a left bundle branch block. Can you tell me anything about this diagnosis, what it means, any treatment, future concerns ...